Sierra Wireless AC763S

I use Sierra Wireless AirCard 754S Mobile Hotspot (AT&T) and it works great. I've tried Clearwire but I do not have signal at certain places. My company uses AT&T service and we have repeaters all over the place. Speed via LTE is quite fast. This varies with signal strength and time of the day (how many people are using the bandwidth).

Sierra Wireless AirCard 763S 4G LTE Mobile Hotspot should be similar to the 754S.

BTW. My Aircard supports 3G Network. HSDPA is pretty good also but AT&T calls it 4G.